94238721 has 10 divisors (see below), whose sum is σ = 140776482. Its totient is φ = 62825760.

The previous prime is 94238687. The next prime is 94238743. The reversal of 94238721 is 12783249.

It can be written as a sum of positive squares in only one way, i.e., 71571600 + 22667121 = 8460^2 + 4761^2 .

It is not a de Polignac number, because 94238721 - 2⁶ = 94238657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (94238821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 581640 + ... + 581801.

Almost surely, 2^94238721 is an apocalyptic number.

It is an amenable number.

94238721 is a deficient number, since it is larger than the sum of its proper divisors (46537761).

94238721 is a wasteful number, since it uses less digits than its factorization.

94238721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163453 (or 1163444 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 94238721 is about 9707.6630040396. The cubic root of 94238721 is about 455.0681715671.

The spelling of 94238721 in words is "ninety-four million, two hundred thirty-eight thousand, seven hundred twenty-one".